Installation Guide
4 | Pergola Installation Guide
Step 2 – Install Post Mounts
a) Mount to Deck
(Figure 2a)
a. Add blocking below deck
flooring under each post mount.
Minimum blocking thickness of
3" (this is two 2x10’s thick)
b. Inset mount as necessary to
ensure the base of post does not
overhang edge of decking.
i. For standard kits (no post
skirt), inset a minimum 1"
from deck edge to edge of
post mounting plate.
ii. For kits with post skirt (10 ½"
square) – inset a minimum
3" from deck edge to edge
of post mounting plate.
c. Detail on nailing blocking –
Minimum 4 nails on each
side of 2by block
d. Mount Fasteners – Carriage
Bolts or ledger attachment
screws (5" or greater)
e. Use composite shims as necessary
to plumb mount. Tighten fasteners.
b) Mount to Concrete Slab
or Landscape Column
Top (Figure 2b)
a. NOTE: For a poured concrete slab
or patio, make sure concrete is in
good repair For a landscape column
we recommend a one-piece cap of
concrete or natural stone (4000
psi or greater), minimum thickness
2.25". It is important that the post is
constructed on a sound foundation.
For a compacted gravel base, this
means a minimum two courses
below grade. For a concrete base,
be sure to attach footing to base
course with the recommended
amount of landscape adhesive. For
construction of post, we recommend
either masonry or a high-quality
concrete product installed with
a quality brand of landscape
adhesive. In the case of adhesive,
follow manufacturer’s instructions.
For added strength you can also
fill the pillar(s) with concrete or
mortar to add weight and rigidity.
b. Inset mount as necessary to
ensure the base of post does not
overhang edge of concrete.
i. For standard kits (no post
skirt), inset a minimum 2" from
edge of mounting surface to
edge of post mounting plate.
ii. For kits with post skirt (10 ½"
square)– inset a minimum 3"
from edge of mounting surface
to edge of post mounting plate.
c. Mount Fasteners -
3
⁄
8
" hot dipped
galvanized wedge or screw type
anchors, minimum 2" embedment.
d. Use composite shims as necessary
to plumb mount. Tighten anchors.
Minimum
4 Nails
per Joist
2"x10" (TYP)
BLOCKING
JOIST
JOIST
7"sq. Vinyl Post
Aluminum Post Mount
Aluminum Plate
1/2"x6" sq.
Carriage Bolt or Ledger Screw (4)
(not included)
Post Mount Standoff
BLOCKING
FLOORING
Figure 2a
7"sq. Vinyl Post
Aluminum Post Mount
Aluminum Plate
½"x6" sq.
Concrete Anchor (4)
(not included)
CONCRETE SLAB OR
LANDSCAPE COLUMN TOP
Post Mount Standoff
Figure 2b